Bandit2013
Well-Known Member
- Messages
- 254
- Location
- North Carolina
I basically bash in my front yard as it has some good jumps in a few places. Not much grass anymore since most of it died off in November. Will have to figure out how to attach a seed spreader to the Baja. Some good spiked wheels and the yard prep for new grass will be in order. This is just to make a point what gets packed up into the engine cooling fins. Typical symptom of bird's nest may be poor response of throttle due to overheated engine. That smoke you see may not be from the exhaust. Note that this was after pushing compressed air into the inlets of the fan/flywheel. Things are not as clean as they appear until you take it apart.
Here is another look from a different angle. I kept my finger over the spark plug hole when removing the cowl. I screwed in the piston stopper so I can take this out to the garage and clean it up with compressed air.
One thing to look for is the melting of the engine cowl. Since mine has that chrome plating on it, it was obvious something was not right.
I know, installing an outerwears on the pull start is a help but not the cure. If you do not cover the bottom of the engine with same type of protection it will continue to happen. Some have used window screen as a remedy for the underside cure. Not sure how well that will hold up. I do have at my disposal some fine aluminum screen but opted to use the outerwares stuff instead. Not trying to promote the product but it does work well. The underside of the engine will fill up with grass and other uninvited objects so as part of basic maintenance you need to clean it out with compressed air. Since I have added that to my recent new build project and a rebuild salvage project, I will be adding the same to this one. After a full tank run, the underside of the engine area is full of grass and crap. It may take a bit longer to get all that stuff out, but it is much easier than rebuilding the engine after you seized it up (assumption that overheating will result in seizure.)
Here is the other Rovan 36cc engine while I was figuring out how to fit this thing. Have to keep it loose so you have clearance for the gear box. The velcro strips were dried out so I ended up using black RTV sealant. That stuff worked great but took 8 hours to cure.
So tempted not to install the cowl but that is required to keep the air flow over the cylinder housing as well as to block the hot air from soaking the carb. Wonder if there are aluminum or non-plastic options out there. I know, big bore engine with oversized heat sink does not use a cowl but that is something out of my budget. Perhaps some other time.
Any suggestions, and or comments will be appreciated. I am still new at this hobby. I know the exhaust gasket is leaking and the exhaust pipe is probably not ideal.
Here is another look from a different angle. I kept my finger over the spark plug hole when removing the cowl. I screwed in the piston stopper so I can take this out to the garage and clean it up with compressed air.
One thing to look for is the melting of the engine cowl. Since mine has that chrome plating on it, it was obvious something was not right.
I know, installing an outerwears on the pull start is a help but not the cure. If you do not cover the bottom of the engine with same type of protection it will continue to happen. Some have used window screen as a remedy for the underside cure. Not sure how well that will hold up. I do have at my disposal some fine aluminum screen but opted to use the outerwares stuff instead. Not trying to promote the product but it does work well. The underside of the engine will fill up with grass and other uninvited objects so as part of basic maintenance you need to clean it out with compressed air. Since I have added that to my recent new build project and a rebuild salvage project, I will be adding the same to this one. After a full tank run, the underside of the engine area is full of grass and crap. It may take a bit longer to get all that stuff out, but it is much easier than rebuilding the engine after you seized it up (assumption that overheating will result in seizure.)
Here is the other Rovan 36cc engine while I was figuring out how to fit this thing. Have to keep it loose so you have clearance for the gear box. The velcro strips were dried out so I ended up using black RTV sealant. That stuff worked great but took 8 hours to cure.
So tempted not to install the cowl but that is required to keep the air flow over the cylinder housing as well as to block the hot air from soaking the carb. Wonder if there are aluminum or non-plastic options out there. I know, big bore engine with oversized heat sink does not use a cowl but that is something out of my budget. Perhaps some other time.
Any suggestions, and or comments will be appreciated. I am still new at this hobby. I know the exhaust gasket is leaking and the exhaust pipe is probably not ideal.